<template>
  <div class="container">
    <div class="left-board">
      <el-scrollbar class="left-scrollbar">
        <!--左侧组件列表-->
        <div class="components-list">
          <div class="components-title"> 常用组件 </div>
          <draggable
            class="components-draggable"
            :list="formItems"
            :group="{ name: 'componentsGroup', pull: 'clone', put: false }"
            :clone="cloneComponent"
            draggable=".components-item"
            :sort="false"
            @start="onStart"
            @end="onEnd"
          >
            <div
              v-for="(element, index) in formItems"
              :key="index"
              class="components-item"
              @click="addComponent(element)"
            >
              <div
                class="components-body"
                :class="{ 'dynamicTable-tips': dynamicTableExist(element) }"
              >
                <icon :code="element.compIcon" :text="element.compName" />
              </div>
            </div>
          </draggable>
          <div class="components-title"> 布局组件 </div>
          <draggable
            class="components-draggable"
            :list="layoutFormItems"
            :group="{ name: 'componentsGroup', pull: 'clone', put: false }"
            :clone="cloneComponent"
            draggable=".components-item"
            :sort="false"
            @start="onStart"
            @end="onEnd"
          >
            <div
              v-for="(element, index) in layoutFormItems"
              :key="index"
              class="components-item"
              @click="addComponent(element)"
            >
              <div class="components-body">
                <icon :code="element.compIcon" :text="element.compName" />
              </div>
            </div>
          </draggable>
          <div class="components-title"> 辅助组件 </div>
          <draggable
            class="components-draggable"
            :list="assistFormItems"
            :group="{ name: 'componentsGroup', pull: 'clone', put: false }"
            :clone="cloneComponent"
            draggable=".components-item"
            :sort="false"
            @start="onStart"
            @end="onEnd"
          >
            <div
              v-for="(element, index) in assistFormItems"
              :key="index"
              class="components-item"
              @click="addComponent(element)"
            >
              <div class="components-body">
                <icon :code="element.compIcon" :text="element.compName" />
              </div>
            </div>
          </draggable>
        </div>
      </el-scrollbar>
    </div>
    <designer
      ref="designer"
      :list="designList"
      :formId="this.formId"
      :formConfig="formConfig"
      @clear="designList = []"
      @updateJSON="handlerUpdateJSON"
      :activeData="activeData"
    />
  </div>
</template>
<script>
  /**
   * 1.0版本
   */
  import draggable from 'vuedraggable';
  import { formItems, assistFormItems, layoutFormItems } from './custom/itemList';
  import designer from './designer';
  import icon from './icon';
  import { getSimpleId } from './utils/IdGenerate';
  import { dynamicTableAllowedItems } from './custom/formConf';
  let tempActiveData;

  export default {
    name: 'formDesigner',
    components: {
      draggable,
      icon,
      designer
    },
    data() {
      return {
        formItems: formItems,
        assistFormItems: assistFormItems,
        layoutFormItems: layoutFormItems,
        designList: this.mapList,
        activeData: {},
        formConfig: this.formConf
      };
    },
    props: {
      value: {
        type: String,
        default: ''
      },
      formConf: Object,
      mapList: Array,
      formId: String
    },
    mounted() {},
    methods: {
      addComponent(element) {},
      cloneComponent(origin) {
        const clone = JSON.parse(JSON.stringify(origin));
        if (!clone.layout) clone.layout = 'colItem';
        if (clone.layout === 'colItem' || clone.layout === 'dynamicItem') {
          let uId = 'fd_' + getSimpleId();
          clone.id = uId;
          clone._id = uId;
          tempActiveData = clone;
        } else if (clone.layout === 'rowItem') {
          let uId = 'row_' + getSimpleId();
          clone.id = uId;
          clone._id = uId;
          tempActiveData = clone;
        } else if (clone.layout === 'tableItem') {
          let uId = 'table_' + getSimpleId();
          clone.id = uId;
          clone._id = uId;
          tempActiveData = clone;
        }
        this.$refs.designer.activeItem = tempActiveData;
      },
      onStart(obj) {},
      onEnd(obj) {
        if (obj.from !== obj.to) {
          this.activeData = tempActiveData;
          this.$refs.designer.activeItem = this.activeData;
          if (obj.to.className.indexOf('row-drag') < 0) {
            this.designList.splice(obj.newIndex, 0, this.activeData);
          }
        } else {
          this.$refs.designer.activeItem = {};
        }
      },
      getFormData() {
        return this.formData;
      },
      handlerUpdateJSON(json) {
        const jsonObject = JSON.parse(json);
        this.designList = [];
        this.designList = this.designList.concat(jsonObject.list);
      }
    },
    computed: {
      formData: function () {
        const list = this.designList;
        const config = this.formConfig;
        let formData = {};
        formData.list = list;
        formData.config = config;
        console.log(formData);
        return JSON.stringify(formData);
        //this.$emit('input',JSON.stringify(formData));
      },
      dynamicTableExist() {
        return function (element) {
          return (
            this.formConfig.dynamicTableAllowed &&
            this.designList.filter((item) => item.compType === 'dynamicTable').length > 0 &&
            dynamicTableAllowedItems.includes(element.compType)
          );
        };
      }
    },
    watch: {
      value(newVal) {
        if (newVal !== '') {
          const formData = JSON.parse(newVal);
          this.designList = formData.list;
          this.formConfig = formData.config;
        }
      }
    }
  };
</script>
<style scoped>
  .container {
    padding: 0px;
  }
  .dynamicTable-tips {
    border: 1px solid#F08080;
  }
</style>
